package com.atguigu.shiro.realm;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import com.atguigu.shiro.entity.User;
import com.atguigu.shiro.service.UserService;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import java.util.List;

/**
*
*   @Author: wh
*   @Date: 2025/8/3 14:53
*
*/
@Component
public class MyRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;
    // 自定义授权方法
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        // 1、获取当前用户身份信息
        String primary = principals.getPrimaryPrincipal().toString();
        // 2、获取用户的角色信息
        List<String> roles = userService.getUserRoleInfo(primary);
        System.out.println("当前用户角色信息为：" + roles);
        // 2.2获取用户权限信息
        List<String> permissions = userService.getUserPermissionInfo(roles);
        System.out.println("当前用户权限信息为：" + permissions);
        // 3、创建对象，存储当前登录的用户的权限和角色
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        // 4、存储角色
        info.addRoles(roles);
        info.addStringPermissions(permissions);
        return info;
    }
    // 自定义登录认证方法
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        // 1.获取用户身份信息,即登录的用户名
        String name = token.getPrincipal().toString();
        // 2.调用业务层获取用户信息（数据库中）
        User user = userService.getUserInfoByName(name); // 根据用户名查询用户信息
        // 3.判断并将数据完成封装
        if (user != null) {
            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(
                    token.getPrincipal(),
                    user.getPwd(),
                    ByteSource.Util.bytes("salt"),
                    name
            );
            return info;
        }
        return null;
    }

    @Bean
    public ShiroDialect shiroDialect(){
        return new ShiroDialect();
    }
}
